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# The more of this an object has the greater the objects inertia?

Updated: 8/10/2023

Wiki User

12y ago

Mass and inertia are essentially the same thing.

Inertia is a characteristic of any physical object and mass is the quantitative measure of the characteristic.

This is embodied in Newton's first law of motion. We can say this as follows.

An object in motion will resist a change in motion and a body at rest will remain at rest unless acted on by some external influence. This property of maitaining a state of motion is called inertia in physics. The external influence that can change a state of motion is a force. To say that some objects resist a change of motion more than others is to say that some objects have more inertia than others.

Fortunately, this characterization of inertia is more than qualitative. There is a precise physical measure of inertia and it is called mass.

This is contained in Newton's second law of motion. We quantify the concept of motion by defining velocity. We quantify change in motion as acceleration. We quantify mass as the ratio of the acceleration to force.

F=ma.

m=F/a.

The dramatic characteristic of the relationship is that if you quantify the mass of an object by applying twice the force, you get twice the acceleration and hence the same mass.

To be slightly more specific we must also note that force and acceleration are both vector quantities and the above relationships are valid for both magnitude and direction of force and velocity.

Note: Two comments are appropriate to be very technical. First, this explanation ignores the possible distinction between mechanical mass and gravitational mass. Secondly, the theory of relative has an equally significant understanding of mass that is not discussed here. These technical points do not invalidate the description above and may be ignored unless engaged in the most sophisticated and expert levels of discussion.

Wiki User

10y ago

Wiki User

14y ago

inertia becomes greater if the mass of the object is greater.

inertia is directly proportional to the mass of the object.

Wiki User

14y ago

Yes. Mass is what gives an object its inertia.

Wiki User

11y ago

You cannot compare an object's size and its inertia because they have different dimensions.

Wiki User

5y ago

The greater the mass of the object, the greater its inertia.

Wiki User

12y ago

which has greater mass

Wiki User

12y ago

well, the more speed the more inertia